The Caro-Kann Defence arises after 1.e4 c6. ECO codes: B10–B19.

History

The opening is named after Horatio Caro (1862–1920) and Marcus Kann (1820–1886), who both analysed it in 1886. It gained prominence following Kann's impressive 24-move victory against Jacques Mieses at the 4th German Chess Congress in Hamburg, 1885.

Main Lines & Variations

After 2.d4 d5, the main variations are:

• 3.Nc3 dxe4 4.Nxe4 Bf5 – The Classical Variation, the most common approach.

• 3.Nc3 dxe4 4.Nxe4 Nd7 – The Modern Variation, favoured by Steinitz, Smyslov, and Karpov.

• 3.e5 – The Advance Variation, recently revitalised through aggressive lines.

• 3.exd5 cxd5 4.c4 – The Panov-Botvinnik Attack, creating isolated queen's pawn positions.

• 3.exd5 cxd5 – The Exchange Variation, producing Carlsbad pawn structures.

• 3.f3 – The Fantasy (Maróczy) Variation.

Key Positions

After 1.e4 c6 – Black prepares ...d5, challenging the centre while avoiding the light-square bishop restriction of the French Defence.

Strategic Themes & Plans

Black's 1...c6 supports ...d5 while keeping the light-squared bishop free (unlike 1...e6 in the French Defence). The Caro-Kann is considered one of the most solid defences to 1.e4, with sound pawn structure and good endgame prospects. The trade-off is that Black loses a tempo compared to the French (where ...e6 develops more actively). Contemporary practitioners at the elite level include Alireza Firouzja, Vladislav Artemiev, and Ding Liren.